Index maps of the Wisconsin-Illinois-Iowa lead-zinc mining district

1951 ◽  
Author(s):  
A.V. Heyl ◽  
E.J. Lyons ◽  
A.F. Agnew ◽  
A.E. Flint ◽  
R.P. Crumpton
Keyword(s):  
Mining District ◽  
Lead Zinc ◽  
Index Maps

scholarly journals Geochemical prospecting at Mesters Vig, central East Greenland and at Mârmorilik, central West Greenland

1976 ◽  
Vol 80 ◽  
pp. 116-120
Author(s):  
H.R Cooke
Keyword(s):  
Heavy Metals ◽  
West Coast ◽  
Metal Content ◽  
East Coast ◽  
Mining District ◽  
The West ◽  
East Greenland ◽  
West Greenland ◽  
Geochemical Prospecting ◽  
Lead Zinc

A prospecting method used in 1975 in Greenland and reported briefly on here measures the total cold extractable amount of seven heavy metals, Zn, Pb, Cu, Co, Ni, Sn and Ag. The primary aim of the method is to discover and outline metal anomalies but not to determine their metal content accurateIy. Once an anomaly is targeted this can be done by more detailed foIlow-up surveys. The two areas chosen to test the suitability of the method to Greenland conditions, were the lead-zinc mining district of Mesters Vig on the east coast and the Sorte Engel (Black Angel) mine at MârmoriIik on the west coast. The traverses run show strong anomalies over kriown veins (figs 37 & 38, AA' & CC'; fig. 39, GG' & HH'), as well as indicatingpreviously unknown mineralisation (fig. 38, BB'; the western anomaly in fig. 39, HH').

scholarly journals Role of water/rock interaction in the formation of ore-bearing solutions and deposition of hydrothermal ore, Sadon Mining District, North Caucasus Mountains, Russia

2019 ◽  
Vol 98 ◽  
pp. 05003
Author(s):  
Michael Borisov ◽  
Dmitry Bychkov ◽  
Mariya Volkova ◽  
Yury Shvarov
Keyword(s):  
Distribution Patterns ◽  
Ore Deposits ◽  
Mining District ◽  
North Caucasus ◽  
Rock Interaction ◽  
Ree Distribution ◽  
Lead Zinc ◽  
Host Rocks ◽  
Hydrothermal Ore Deposits

REE distribution patterns of the ores and host rocks of the Dzhimidon vein lead-zinc deposit (North Caucasus, Ossetia, Sadon mining district, Russia) have been analyzed to elucidate the source(s) of hydrothermal ore deposits. Two types of prevailing rocks are involved in ore formation - Paleozoic granites (the main ore-hosting rocks at the majority of deposits) and Precambrian schists (specific only the for host rocks of the Dzhimidon deposit). The source of ore components tends to be complex and includes host rocks in variable proportions that could be characterized by REE distribution in ores. Interaction of water with combined sources was thermodynamically modeled. Critical differences were found in the ore-forming models, with variable sequence and rock proportions during interaction with barren fluid.

Chapter 19: The Peñasquito Gold-(Silver-Lead-Zinc) Deposit, Zacatecas, Mexico

2020 ◽  
pp. 399-414
Author(s):  
Omar Dromundo ◽  
Sigfrido Robles ◽  
Thomas Bissig ◽  
Claudio Flores ◽  
Maria del Carmen Alfaro ◽  
...  
Keyword(s):  
Metal Sulfide ◽  
Upper Jurassic ◽  
Mining District ◽  
Base Metal Sulfide ◽  
Sulfide Mineralization ◽  
Early Oligocene ◽  
Marine Carbonate ◽  
Gold Silver ◽  
Laramide Orogeny ◽  
Lead Zinc

Abstract Peñasquito is an Au-Ag-Zn-Pb deposit and currently the principal Au-producing mine in Mexico. It is the most recent major discovery in the historically important Concepción del Oro mining district. Current Au reserves plus historic production at Peñasquito stand at 12.67 Moz, in addition to 527 Moz Ag, 3,600 lb Pb, and 8,000 lb Zn in remaining proven and probable reserves. Mineralization is centered on the Peñasco and Brecha Azul diatreme breccias, which cut an Upper Jurassic to Upper Cretaceous marine carbonate-dominated sedimentary sequence, which underwent folding during the Laramide orogeny. The diatreme breccias and associated mineralization are associated with early Oligocene quartz-feldspar porphyries dated at 34.4 ± 0.4 to 33.7 ± 0.4 Ma and thus 3 to 10 m.y. younger than the other skarn and polymetallic deposits known in the district. The Peñasco diatreme is about 1 km in diameter and hosts epithermal-style disseminated mineralization, whereas the contiguous Cretaceous carbonaceous and calcareous siltstone and interbedded sandstone of the Caracol Formation is the principal host for stockwork and manto-type, massive base metal sulfide mineralization. Skarn-type mineralization is Cu-Zn rich, extends to the current depth of drilling some 2 km below the premine surface, and is hosted by the Jurassic-Cretaceous sequence beneath the Caracol Formation. In addition, weakly developed stockwork Mo (±Cu) mineralization has also been intersected by drilling at depths of nearly 2 km.

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